91241394603523 has 2 divisors, whose sum is σ = 91241394603524. Its totient is φ = 91241394603522.

The previous prime is 91241394603503. The next prime is 91241394603641. The reversal of 91241394603523 is 32530649314219.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91241394603523 is a prime.

It is not a weakly prime, because it can be changed into another prime (91241394603503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45620697301761 + 45620697301762.

It is an arithmetic number, because the mean of its divisors is an integer number (45620697301762).

Almost surely, 2^{91241394603523} is an apocalyptic number.

91241394603523 is a deficient number, since it is larger than the sum of its proper divisors (1).

91241394603523 is an equidigital number, since it uses as much as digits as its factorization.

91241394603523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4199040, while the sum is 52.

The spelling of 91241394603523 in words is "ninety-one trillion, two hundred forty-one billion, three hundred ninety-four million, six hundred three thousand, five hundred twenty-three".